diff --git a/Grid/algorithms/multigrid/GeneralCoarsenedMatrixMultiRHS.h b/Grid/algorithms/multigrid/GeneralCoarsenedMatrixMultiRHS.h
index e6c12bdc..c4bd4fcc 100644
--- a/Grid/algorithms/multigrid/GeneralCoarsenedMatrixMultiRHS.h
+++ b/Grid/algorithms/multigrid/GeneralCoarsenedMatrixMultiRHS.h
@@ -368,6 +368,7 @@ public:
 		       ComplexD(c), 
 		       BLAS_CP);
     }
+    BLAS.synchronise();
     t_mult+=usecond();
     //    std::cout << GridLogMessage << "New Mrhs coarse BLAStoGrid "<<std::endl;
     t_BtoG=-usecond();